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| author | Ivan Maidanski <ivmai@mail.ru> | 2013-03-13 22:46:24 +0400 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2013-03-13 22:47:34 +0400 |
| commit | a965c42c90e5d5faf84d57cefae27bb2c5fce30a (patch) | |
| tree | 39a956e6eac55e99dcc7426f9fb19bcd3e88ea64 | |
| parent | fc0db46e8679904365df8a464061c144d515160d (diff) | |
Fix asm constraint of CAS memory operand for gcc/alpha
* src/atomic_ops/sysdeps/gcc/alpha.h (AO_compare_and_swap): Use "+m"
asm constraint for *addr instead of "=m" (because the value pointed by
addr is read and written by the code).
| -rw-r--r-- | src/atomic_ops/sysdeps/gcc/alpha.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/atomic_ops/sysdeps/gcc/alpha.h b/src/atomic_ops/sysdeps/gcc/alpha.h index 8ce67a0..3b98bec 100644 --- a/src/atomic_ops/sysdeps/gcc/alpha.h +++ b/src/atomic_ops/sysdeps/gcc/alpha.h @@ -57,7 +57,7 @@ AO_compare_and_swap(volatile AO_t *addr, " stq_c %0,%1\n" " beq %0,1b\n" "2:\n" - :"=&r" (temp), "=m" (*addr), "=&r" (was_equal) + : "=&r" (temp), "+m" (*addr), "=&r" (was_equal) : "r" (new_val), "Ir" (old) :"memory"); return (int)was_equal; |